Security+ Jobs in District of Columbia

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361 - 380 of 6,635 Jobs

Information System Security Officer (ISSO)

Lockheed Martin Corporation

•

Manassas, Virginia, USA

Full-time

Job Description Lockheed Martin is a Cyber Security pioneer, partner, innovator, and builder. Our amazing employees are on a mission to make a difference in the world and every single day we use our unique skills and experiences to create, design and build solutions to some of the worlds' hardest engineering problems. We encourage our employees to think big, perform with excellence, and build incredible products. If you have the passion and courage to dream big, we invite you to join our cultu
Posted 14 days ago | Updated 10 hours ago

Senior Software Engineer

Modern Technology Solutions

•

Chantilly, Virginia, USA

Full-time

Overview Modern Technology Solutions, Inc. (MTSI) is seeking a Senior Software Engineer with experience in Java and JavaScript to join our team in Chantilly, VA. We are a small, but highly empowered team where every team member is directly responsible for the success of our mission. In your role, you will be responsible for designing, implementing, and maintaining software applications across one or more projects using an agile development model. Why is MTSI known as a Great Place to Work? Inte
Posted 60+ days ago | Updated 23 days ago

IT Security Systems Analyst - REMOTE - CONTRACT TO HIRE

Kapsons LLC

•

Remote

Contract

A Fortune 500 company is seeking an experienced IT Security Analyst to support the security and compliance of enterprise systems, infrastructure, and applications. With a strong national presence and a culture rooted in innovation and collaboration, this organization offers the opportunity to work in a fast-paced, forward-thinking environment. This role is remote, with a preference for candidates based in Los Angeles or Houston due to team alignment. Occasional light travel may be required for t
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Posted 2 days ago

Network Engineer

Leidos

•

Ashburn, Virginia, USA

Full-time

Department of Homeland Security (DHS), Customs and Border Protection (CBP) Security Operations Center (SOC) is a US Government program responsible to prevent, identify, contain and eradicate cyber threats to CBP networks through monitoring, intrusion detection and protective security services to CBP information systems including local area networks/wide area networks (LAN/WAN), commercial Internet connection, public facing websites, wireless, mobile/cellular, various cloud environments, security
Posted 33 days ago | Updated 10 hours ago

Information Systems Security Engineer (ISSE)

Apex Systems

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Washington, District of Columbia, USA

Full-time

Job#: 2080503 Job Description: Apex Systems is seeking an Information Systems Security Engineer (ISSE) to support the US Airforce at the Pentagon. If interested, email your resume. Position: ISSE Location: Fully onsite @ the Pentagon Hours: M-F 8 hour shift between 6AM-6PM Job type: Long term contract Certifications: Must have Security + Overview: Seeking high-level IT Professionals to provide cyber security and security engineering services including system security engineering, cybersecuri
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Posted 3 days ago | Updated 10 hours ago

Information Systems Security Engineer

Nightwing

•

Sterling, Virginia, USA

Full-time

Nightwing provides technically advanced full-spectrum cyber, data operations, systems integration and intelligence mission support services to meet our customers' most demanding challenges. Our capabilities include cyber space operations, cyber defense and resiliency, vulnerability research, ubiquitous technical surveillance, data intelligence, lifecycle mission enablement, and software modernization. Nightwing brings disruptive technologies, agility, and competitive offerings to customers in th
Posted 60+ days ago | Updated 10 hours ago

Cloud Architect | Active Secret clearance

General Dynamics

•

Falls Church, Virginia, USA

Full-time

Type of Requisition: Regular Clearance Level Must Currently Possess: Secret Clearance Level Must Be Able to Obtain: Secret Public Trust/Other Required: None Job Family: Solutions Architect Job Qualifications: Skills: Cloud Platform, Cloud Solutions, DevSecOps, Public Clouds Certifications: None Experience: 10 + years of related experience ship Required: Yes Job Description: Own the opportunity as a Cloud Architect and help ensure the mission is never interrupted. At GDIT, we deliver clar
Posted 36 days ago | Updated 10 hours ago

NCIS Cyber Systems Administrator - SecOps | Active TS/SCI clearance

General Dynamics

•

Quantico, Virginia, USA

Full-time

Type of Requisition: Pipeline Clearance Level Must Currently Possess: Top Secret/SCI Clearance Level Must Be Able to Obtain: Top Secret/SCI Public Trust/Other Required: None Job Family: Systems Administration Job Qualifications: Skills: DISA STIG, IT Security Operations, Security Content Automation Protocol (SCAP), System Administration Certifications: None Experience: 5 + years of related experience ship Required: Yes Job Description: Transform technology into opportunity as a Cyber Sys
Posted 60+ days ago | Updated 10 hours ago

Senior Software Developer (cleared)-61525

Syneren Technologies

•

Alexandria, Virginia, USA

Full-time

Job Title: Sr. Software Developer (Full-Stack) Job Location: Alexandria, VA. (Onsite) Job Description: Syneren is seeking a skilled and visionary Sr. Software Developer to lead our software development team to design robust solutions within the Microsoft Azure ecosystem to help modernized legacy application to the newest technology and approach available in the Azure Cloud. As a Sr. Software Developer, you will play a critical role in shaping our cloud infrastructure, ensuring scalability, secur
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Posted 60+ days ago | Updated 8 hours ago

Systems Administrator 2

Apex Systems

•

Linthicum Heights, Maryland, USA

Full-time

Job#: 2071515 Job Description: Apex Systems is immediately seeking a Systems Administrator II (Linux/Windows) to join our large government integrators client's Mission Systems sectors Classified Solutions team in Linthicum, MD. ** If you or someone you know is interested in learning more about this, please send an up-to-date resume to Kalya Ivey-Russell at ** Position: Linux/Windows Systems Administrator Location: Linthicum, MD Duration: 6m CTH Compensation: Hourly rate on Apex's W2 ranges f
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Posted 60+ days ago | Updated 10 hours ago

Splunk Engineer Jr.

Leidos

•

Ashburn, Virginia, USA

Full-time

The Splunk Engineer JR. is equivalent to a mid-level engineer at the Department of Homeland Security (DHS). DHS Customs and Border Protection (CBP) Security Operations Center (SOC) is a US Government program responsible to prevent, identify, contain, and eradicate cyber threats to CBP networks through monitoring, intrusion detection and protective security services to CBP information systems including local area networks/wide area networks (LAN/WAN), commercial Internet connection, public facing
Posted 7 days ago | Updated 10 hours ago

Senior Computer Network Engineer

Leidos

•

Odenton, Maryland, USA

Full-time

Job DescriptionDescription The Digital Modernization Sector at Leidos has an opening for a senior Network Engineer on the DISA Defense Red Switch Network team in support of an enterprise VoIP management system GSM-O II contract at Fort Meade, MD. The successful candidate will have a Network Engineering background responsible for the design, document, test, deployment and maintenance of the IP network solutions within an enterprise environment on a high-paced, fast-moving program. As a Network E
Posted 35 days ago | Updated 8 hours ago

Sr Principal Systems Engineer - LINUX - Active Top Secret Required

General Dynamics

•

Washington, District of Columbia, USA

Full-time

Type of Requisition: Regular Clearance Level Must Currently Possess: Top Secret Clearance Level Must Be Able to Obtain: Top Secret/SCI Public Trust/Other Required: None Job Family: Systems Engineering Job Qualifications: Skills: Complex Systems, Microsoft Windows Server, Systems Engineering, Systems Management Certifications: CompTIA - Security+ CE - CompTIA Experience: 15 + years of related experience ship Required: Yes Job Description: Senior Principal Systems Engineer - Linux Design,
Posted 60+ days ago | Updated 10 hours ago

Desktop Engineer - SCCM

SAIC

•

Quantico, Virginia, USA

Full-time

Job ID: 2506390 Location: QUANTICO, VA, US Date Posted: 2025-06-24 Category: Information Technology Subcategory: IT Systems Engineer Schedule: Full-time Shift: Day Job Travel: Yes, 10 % of the Time Minimum Clearance Required: TS/SCI Clearance Level Must Be Able to Obtain: None Potential for Remote Work: No Description Introduction Make a difference for national security by joining a team of dedicated IT professionals who will sustain, modernize and transform the enterprise IT capabili
Posted 43 days ago | Updated 7 hours ago

Sr. Systems Engineer

Leidos

•

Fort Belvoir, Virginia, USA

Full-time

Leidos is seeking a Sr. Systems Engineer to support large-scale migration and operations on a large, high-profile DOD contract. The I3TS program provides enterprise-wide IT support to enable DTRA's Information Management & Technology Directorate (ITD) to consolidate, modernize, and continuously innovate the delivery of IT services and mission capabilities to DTRA's internal and external mission partners operating in CONUS and OCONUS locations. The Sr Systems Engineer will deploy new Windows and
Posted 60+ days ago | Updated 10 hours ago

Senior Network Engineer

Parsons Services Company

•

Quantico, Virginia, USA

Full-time

In a world of possibilities, pursue one with endless opportunities. Imagine Next! When it comes to what you want in your career, if you can imagine it, you can do it at Parsons. Imagine a career working with exceptional people sharing a common quest. Imagine a workplace where you can be yourself. Where you can thrive. Where you can find your next, right now. We've got what you're looking for. Job Description: Parsons is looking for an amazingly talented Senior Network Engineer to join our tea
Posted 60+ days ago | Updated 10 hours ago

Mobility Engineer - TS/SCI with Polygraph

General Dynamics

•

Chantilly, Virginia, USA

Full-time

Type of Requisition: Regular Clearance Level Must Currently Possess: Top Secret SCI + Polygraph Clearance Level Must Be Able to Obtain: Top Secret SCI + Polygraph Public Trust/Other Required: None Job Family: Systems Engineering Job Qualifications: Skills: Developing Test Plans, Systems Design, Systems Engineering Certifications: None Experience: 2 + years of related experience ship Required: Yes Job Description: Systems Engineer Job Description Contributes to completion of milestones a
Posted 60+ days ago | Updated 10 hours ago

Systems Administrator - TS/SCI

General Dynamics

•

Fort Belvoir, Virginia, USA

Full-time

Type of Requisition: Regular Clearance Level Must Currently Possess: Top Secret SCI + Polygraph Clearance Level Must Be Able to Obtain: Top Secret SCI + Polygraph Public Trust/Other Required: None Job Family: Systems Administration Job Qualifications: Skills: System Administration, Technical Support, Troubleshooting Certifications: Security+, CE - CompTIA-Security+ CE Experience: 1 + years of related experience ship Required: Yes Job Description: Manages the functionality and efficiency
Posted 60+ days ago | Updated 10 hours ago

Active Directory Systems Engineer - TS/SCI w/Poly

General Dynamics

•

Annapolis, Maryland, USA

Full-time

Type of Requisition: Regular Clearance Level Must Currently Possess: Top Secret SCI + Polygraph Clearance Level Must Be Able to Obtain: Top Secret SCI + Polygraph Public Trust/Other Required: Other Job Family: Systems Engineering Job Qualifications: Skills: Group Policy, Software Applications, Software Systems Certifications: None Experience: 2 + years of related experience ship Required: Yes Job Description: Active Directory Systems Engineer Deliver simple solutions to complex problems
Posted 54 days ago | Updated 10 hours ago

Identity and Directory Services Engineer - TS/SCI with Polygraph

General Dynamics

•

Chantilly, Virginia, USA

Full-time

Type of Requisition: Regular Clearance Level Must Currently Possess: Top Secret SCI + Polygraph Clearance Level Must Be Able to Obtain: Top Secret SCI + Polygraph Public Trust/Other Required: None Job Family: Systems Engineering Job Qualifications: Skills: Active Directory (AD), DNS, Microsoft Windows Server Certifications: None Experience: 10 + years of related experience ship Required: Yes Job Description: We are seeking highly motivated engineers with a thirst for learning, in support
Posted 60+ days ago | Updated 10 hours ago